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Galina-37 [17]
3 years ago
11

Help me graph y=3-|x-1|

Mathematics
1 answer:
nexus9112 [7]3 years ago
6 0

Answer:

In the photo below.

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RSM wants to send four of its 18 Math Challenge teachers to a conference. How many combinations of four teachers include exactly
tatiyna

Answer:

1120 combinations of four teachers include exactly one of either Mrs. Vera or Mr. Jan.

Step-by-step explanation:

The order in which the teachers are chosen is not important, which means that the combinations formula is used to solve this question.

Combinations formula:

C_{n,x} is the number of different combinations of x objects from a set of n elements, given by the following formula.

C_{n,x} = \frac{n!}{x!(n-x)!}

In this question:

1 from a set of 2(Either Mrs. Vera or Mr. Jan).

3 from a set of 18 - 2 = 16. So

C_{2,1}C_{16,3} = \frac{2!}{1!1!} \times \frac{16!}{3!13!} = 1120

1120 combinations of four teachers include exactly one of either Mrs. Vera or Mr. Jan.

4 0
3 years ago
Nationwide, it is estimated that 40% of service stations have gas tanks that leak to some extent. A new program in California is
fredd [130]

Answer:

Since the calculated value of z= -1.496 does not fall in the critical region z < -1.645 we conclude that the new program is effective. We fail to reject the null hypothesis .

Step-by-step explanation:

The sample proportion is p2= 7/27= 0.259

and q2= 0.74

The sample size = n= 27

The population proportion = p1= 0.4

q1= 0.6

We formulate the null and alternate hypotheses that the new program is effective

H0: p2> p1   vs  Ha: p2 ≤ p1

The test statistic is

z= p2- p1/√ p1q1/n

z= 0.259-0.4/ √0.4*0.6/27

z=  -0.141/0.09428

z= -1.496

The significance level ∝ is 0.05

The critical region for one tailed test is z ≤ ± 1.645

Since the calculated value of z= -1.496 does not fall in the critical region z < -1.645 we conclude that the new program is effective. We fail to reject the null hypothesis .

8 0
3 years ago
There are 28 students in Mr. Mineva's class. Of this class, 1/7 wears glasses. Out of those
Ostrovityanka [42]
28/7= 4
If there’s 4 people that wear glasses and 3/4 are males then it’s 3.
5 0
3 years ago
Read 2 more answers
HELP ASAP PLSSSSSSS
scoundrel [369]

Answer:

x=3

Step-by-step explanation:

8*3 = 24

4*3=12

24-12=12

5 0
1 year ago
Read 2 more answers
Hii, this geometry, please help haha!!
frutty [35]

Answer:

its 6

Step-by-step explanation:

(16x+5) = 1

50 - 45 = 5

5+1=6

4 0
3 years ago
Read 2 more answers
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